TaoJones
Beyond Driven
Pretty sure that Tesla use stats from their network and ownership locations amongst other thing to figure out where to put superchargers.
As others have mentioned, there are other options. SCs just make it easier.
You'd be surprised how much direct feedback can influence the *timing*, however. Locations have been forecast for years and yes, tweaked per density and such.
There are no other practical options for efficient transcontinental travel. It's SCs or nothing. Time is money for those upon whom expectations are to travel at the same level of efficiency as exists for ICEs. One day, when I'm retired and don't care about wasting a half-day and an overnight every third day because Tesla can't meet it's own forecasted commitments, I will be pleasantly unconcerned.
Until *that* day, however, I will continue to question, among other things, an obvious inability to meet commitments. Here's a fun one that truly does fall into the recreational as opposed to the professional: The Alaskan Highway. First transited in 2013 by a fellow in a red Model S (from Tijuana to Fairbanks, iirc), Elon did say relatively recently that he'd light up the Alaskan Highway (within some purported timeframe that is in no danger of being actually met).
For those unfamiliar, the Alaskan Highway is a feat of engineering with some sections not much different from their World War II-era construction. Transiting *that* is old school - drive for 5 hours, charge for 19 hours, rinse and repeat. I doubt there are even Chademos yet. It's almost a vanity project, as it were.
Now *that* fits into the "<1%" canard far more plausibly than providing the first and only transcontinental route that doesn't put drivers into greater risk when ICErs wouldn't think of detouring.
I'm just glad that Fort Stockton *got* permit-ed. I just hope it doesn't go the way of Santa Barbara, whose blue dot was unceremoniously removed relatively recently as well after something like a year of stagnation. Not that this is unusual for Santa Barbara, but I digress.